The Gym leaders part 2

When you have beaten the champion your rival (who will be the opposite sex from you) rushes into your house to meet you and says there's a huge situation in some mountain somewhere. Xerneas, along with female gym leaders Viola, Alice, Alison and Zelda (the psychic type mother in the final gym) is fighting against Yvetal and male gym leaders Zap, George, Michael and Richard ( Zelda's dark-type husband) in the ultimate battle of the sexes. In the battle, all of the gym leaders' pokemon are knocked out, and the battle comes down to the two legendaries, who are evenly matched until Mewtwo's new forme, who was mutated by evil Team Sky and escaped, intervenes and stops the fight. The two pokemon, weakened, are captured. In Y, Xerneas is captured by Alice, who as players may have guessed has always wanted to train fairy types leaving Yvetal to you. In X, Yvetal goes to Michael, and you get Xerneas. You can battle the other legendary once per day by going to Michael or Alice's gym. Mewtwo flees, and you must track it down. But that's a story from another time.